2.
    发明专利
    未知

    公开(公告)号:BR9003727A

    公开(公告)日:1991-09-03

    申请号:BR9003727

    申请日:1990-07-31

    Applicant: IBM

    Abstract: This is an electronic scheme for correcting for mechanical misalignment (41) and chromatic aberrations (42) from laser beam to laser beam in the scan direction of a multiple beam laser scanning system for use in an electrophotographic machine. Each beam is first corrected for mechanical misalignment and thereafter for chromatic aberrations. A reference laser beam produces two pulses near the start of scan (SOS) and two pulses near the end of scan (EOS). A non-reference laser beam then produces SOS and EOS pulses from which the mechanical misalignment is calculated. A gated clock is energized by the reference pulse and a tapped delay line is used for nanosecond resolution. After accomplishing correction for mechanical misalignment, chromatic aberrations are correctected by measuring the amount of total pel displacement of the non-reference scan line relative to the reference scan line and inserting appropriate delays at selected intervals throughout the non-reference scan in order to maintain pel placement accuracy to a desired tolerance.

    Colored masks for flat displays
    6.
    发明专利

    公开(公告)号:CZ20011889A3

    公开(公告)日:2002-02-13

    申请号:CZ20011889

    申请日:1999-11-29

    Applicant: IBM

    Abstract: Three component color sub-pixel element areas of red,green and blue, are serially formed in an overall pixel area, on a transparent substrate, and after each individual color sub pixel element formation, a layer of protective transparent material is applied over the individual sub pixel element and the pixel area before formation of the next sub pixel element. The protective layers render the sub pixel elements unaffected by the processing of subsequent sub pixel members where such conditions as high temperature curing, hardening agents or hardening processes are involved, whereby advantages are achieved in manufacturability, reliability, yield, cost, and throughput.

    COLOR FILTERS FOR FLAT PANEL DISPLAYS

    公开(公告)号:CA2352168A1

    公开(公告)日:2000-06-08

    申请号:CA2352168

    申请日:1999-11-29

    Applicant: IBM

    Abstract: Three component color sub-pixel element areas (10, 12, 15) of red, green and blue, are serially formed in an overall pixel area (9), on a transparent substrate (2), and after each individual color sub pixel element formation, a layer of protective transparent material (11, 14, 16) is applied over the individual sub pixel element (10, 12, 15) and the pixel area before formatio n of the next sub pixel element. The protective layers render the sub pixel elements unaffected by the processing of subsequent sub pixel members where such conditions as high temperature curing, hardening agents or hardening processes are involved, whereby advantages are achieved in manufacturability , reliability, yield, cost, and throughput.

    Liquid crystal displays
    8.
    发明专利

    公开(公告)号:GB2324400A

    公开(公告)日:1998-10-21

    申请号:GB9807011

    申请日:1998-04-02

    Applicant: IBM

    Abstract: A method and structure for a display with reduced size pixels retains the transmissive approach which enables continued use of the least expensive transmission optics available. Back-end-of-the-line vertical cells are built on top of the row and column x, y lines of the pixels. In a PDLC type display embodiment each vertical cell is filled with PDLC which operates in a normally black mode known as the PDLC reverse mode. When the pixel control voltage is set ON, the liquid crystal is perpendicular to the light path resulting in a light pass through providing a bright state. When the control voltage is set OFF, the liquid crystals are randomly oriented, only the scattered light goes through the cell, so the pixel is in its OFF state. PDLC used here has two advantages. Firstly, the PDLC requires no rubbing. It is difficult to rub individual cell walls. Secondly, the use of both polarisations by the PDLC increases its luminous efficiency. Various embodiments are described for implementing vertical active electrodes and common ground electrodes. Advantages are described for employing the vertical electrodes with various implementations of a hidden storage capacitor.

    COLOR FILTERS FOR FLAT PANEL DISPLAYS

    公开(公告)号:CA2352168C

    公开(公告)日:2005-07-05

    申请号:CA2352168

    申请日:1999-11-29

    Applicant: IBM

    Abstract: Three component color sub-pixel element areas (10, 12, 15) of red, green and blue, are serially formed in an overall pixel area (9), on a transparent substrate (2), and after each individual color sub pixel element formation, a layer of protective transparent material (11, 14, 16) is applied over the individual sub pixel element (10, 12, 15) and th e pixel area before formation of the next sub pixel element. The protective layers render the sub pixel elements unaffected by the processing of subsequent sub pixel members where such conditions as high temperature curing, hardening agents or hardening processes are involved, whereby advantages are achieved in manufacturability, reliability, yield, cost, and throughput.

    COLOR FILTERS FOR FLAT PANEL DISPLAYS

    公开(公告)号:PL347975A1

    公开(公告)日:2002-05-06

    申请号:PL34797599

    申请日:1999-11-29

    Applicant: IBM

    Abstract: Three component color sub-pixel element areas of red,green and blue, are serially formed in an overall pixel area, on a transparent substrate, and after each individual color sub pixel element formation, a layer of protective transparent material is applied over the individual sub pixel element and the pixel area before formation of the next sub pixel element. The protective layers render the sub pixel elements unaffected by the processing of subsequent sub pixel members where such conditions as high temperature curing, hardening agents or hardening processes are involved, whereby advantages are achieved in manufacturability, reliability, yield, cost, and throughput.

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